Pipe flask



Jan. 13, 1931.- J. c. ADDlcKs ET AL 6 I PIPE FLASH Filed March 3, 1928 2 Sheets-Sheet l 1931- J. c. ADDICKS ET AL 1,788,969

PIPE FLASK Filed March 3, 1928 I 2 Sheets-Sheet 2 Patented Jan. 13, 1931 UNITED stares usa es PATENT other i JACOB c. ADDICKS, F BALTIMORE, MARYLAND, AND WALTER n. BUne-Ess, or RUTHER- ronn, new JERSEY, ASSIGNORS mourns CENTRAL FOUNDRY coivrranxjor NEW YORK, N. Y., A CORPORATION OF MAINE PIPE FLASK Application filed March 3, 19:28. Serial 110,258,807

Our invention relates to foundry flasks, and particularly to sand flasks used for. forming sand mold sections for the casting of a and claim. v

In the accompanying drawings, ig. l is a plan of the drag of a flask embodying our invention; Fig. 2 is a section on lines 11-11 of Fig. 1 but with the molded sand in position therein; Fig. 3 is a plan of the cope; Fig. i is a section on lines IVIV ,of'Fig. 3; and Fig. 5 is the hub end elevation of an assembly of the cope and drag sections.

Referringmore specifically to the drawings, the cope and drag sections 2 and 3 of the flask are preferably made of aluminum and are substantially similar in shape. In each the longitudinallyextending sides 4 flare outwardly from the outside surface 5 (the bottom of one section or the top of the other, as the case may be) to the central'horizontal plane 6 of the flask, and'the portion 7 of the sides 4 away from such central plane 6 is cut away or inclined inwardly at 8 to the longitudinally extending ribs 9 which project beyond the'other portions of the flask to form bearings or supports for the two parts of the flask during the mold forming opera.

tion and for the drag during the pouring operati'on. These ribs or bars 9 have tapering sides, which increase incross-section toward the outer surface 5 of the section, and are so placed that it is not necessary to use the usual bottom boardsto hold'the sand in theflask, and such ribs 9 may be reduced to a minimum of two, which thus readily afi'ord proper bearings for that flask section when set on the foundry floor. Each flask section has also on its inner surface a plurality of recesses 10,

which conform to'the exterior of the pipe to be cast. The flasks are reinforcedby cross webs 11 which join the ribs 9 and divide the area of the flask into compartments the sides of which aflord a bearing for the sand. After being rammed the sand is struck ofl by the molder to the line indicated at 8, so as toperrnit the flask to have an uninterrupted and steady bearing upon the bars 9.

' Gul improved flasks by reason of the'flarmg or tapered sides 4 are better adapted to be filled by a sand slinging machine than' those with straight sides. The flaring or tapered sides 4: also assist in a more proper distribution ofthe sand by the sand slinging machineaas well as a better support-for the sand afterit has been rammed and struck off. .The cutting down ofthe extent of the side wall and the elimination of acute internalangles or corners renders the action of the sand slinging machine I more eflective and also enables'the flasks to be rammedto better advantage. Thelcutting ofl'of the cor-' i-iers of the fiaskrsections also permits the easier 'rollingover and also the handling of such sections because ofthe reduction in weight ooth' of sand and ofjflask, ,The cutting back of the corners and'b'evelling of the sand upwardly from the edges of the bars to form employed are used as terms. of description and not of limitation, and we have no inten-' tion, in theuse of such terms andexpressions, of excludingany mechanical equivalents of the features shown and described, or portions thereof, but recognize that various structural modifications are possible within the scope ofthe invention claimed. What we claim is :J a I I v 1. In a flask for casting multiple pipe, cope and drag sections each having side walls flaring toward the central horizontal plane of the flask, .each section having longitudinal ribs intermediate itsside walls adapted torest on the floor to support'such section with a portion of its bottom free of the floor. I

In a flask for casting. multiple pipe, cope and dragse'ctions' each having'sid'e walls flaring toward the central horizontalpl'ane of the flask, supporting ribsfor each section intermediate the side walls and adapted to rest on the floor,-the surface betweena rib and the side wall being inclined upwardlyfrom the rib to the side wall to reduce the weight of the section andeliminate sharp internal angles. 7

3. In a' flask for casting multiple pipe, cope and drag sections each having side walls flaring toward the central horizontal plane of the flask, supporting ribs for each section intermediate the side walls and adapted to rest on the fl0or, the surface between arib and the side Wall being inclined upwardly from the rib to the side wall to reduce the weight of the section and eliminate sharp internal angles, the adjacent edges of the side walls terminating at a distance vertical ly from the horizontal plane in which the outer edges of tlie'ribs lie, said wall and ribs comprising means for supporting molding sand in the flask without bottom boards.

a. Inca flask for castingmultiple' pipe, 2o complementary cope and drag sections each having side walls flaring toward the central horizontal plane of the flask, and ribs arranged atright angles to each other between the side walls dividing the section into rectangular compartments adapted to support the sand in the section certain of the ribs being arranged at their outer ends to sup'- port the section on the floor. V 5. In a flask for casting multiple pipe,

complementary cope and drag sections each havingiside wallsfflaring toward the central horizontalplaneof the flask, and ribs arranged at right angles to each other between the side walls dividing the section into rectangular compartments adapted to support the sand in the section, some of the ribs extending longitudinally of theflasksubstantially beneathtlre axes of the pipe to be cast and being of increasing cross-'section toward the outer surface of each such'section. 6. In a flask for casting multiple pipe complementary cope and drag sections, each having a plurality of longitudinal ribs extending substantially beneath the axes of the pipe to be cast, and a plurality of transverse partition members having cut-away portions conforming generally to the contour of the pipe to be cast,-said ribs and partition members serving to divide said sections into substantially rectangular compartments adapted to hold molding sand.

7. In a flask for casting pipe complementary cope and drag sections each having a longitudinal rib extending substantially beneath the axis of a pipe to be cast and adapted to rest on the floor, and a plurality of partition membersextending transversely of each section, said members being cut away to conform to the contour of the pipe to be cast. 7 I

JACOB C. ADDICKS. WALTER vE. BURGESS. 

